@font-face {
    font-family: 'Circular';
    src: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/1137/Circular-Book.woff') format('woff');
    font-weight: normal;
}

@font-face {
    font-family: 'Circular';
    src: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/1137/Circular-Bold.woff') format('woff');
    font-weight: bold;
}

* {
    box-sizing: border-box;
}

html,
body {
    background: #18212D;
}

body {
    position: absolute;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    padding: 1rem;
    color: white;
    font-family: 'Circular', 'sans-serif';
    -webkit-font-smoothing: antialiased;
}

section {
    display: flex;
    flex-direction: column;
    position: relative;
    width: 100%;
    max-width: 18rem;
    margin: auto;
    text-align: center;
}

h1 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

a {
    color: #206EFF;
    font-weight: bold;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

footer {
    margin-bottom: 1rem;
}

footer span {
    opacity: .5;
}

.logo img {
    width: 75px;
    height: 16px;
}

article {
    display: flex;
    flex-direction: column;
    position: relative;
    width: 100%;
    min-height: 8rem;
    margin-bottom: 1rem;
    padding: 1rem;
}

.red {
    background-color: #FF324A;
}

.green {
    background-color: #31FFA6;
}

.blue {
    background-color: #206EFF;
}

.yellow {
    background-color: #FFFF99;
}